Accumulator selecting and tens transfer mechanism for calculating machine



Sept. 3, 1968 R. E. BUSCH 3,399,830

ACCUMULATOR SELECTING AND TENS TRANSFER MECHANISM FOR CALCULATINGMACHINE Original Filed Aug. 11, 1964 6 Sheets-Sheet 1 INVENTOR. RICHARDE. BUSCH ATTORNEY Sept. 3, 1968 R. E. BUSCH 3,399,830

ACCUMULATOR SELECTING AND TENS TRANSFER MECHANISM FOR CALCULATINGMACHINE Driginal Filed Aug. 11, 1964 6 Sheets-Sheet 2 INVENTOR RICHARDE. BUSCH ATTORNEY Sept. 3, 1968 R. E. BUSCH 3,399,830

ACCUMULATOR SELECTING AND TENS TRANSFER MECHANISM FOR CALCULATINGMACHINE Original Filed Aug. 11, 1964 6 Sheets-Sheet 3 FIG. 4

FIG. 6

INVENTOR. RICHARD E. BUSCH ATTORNEY I Sept. 3, 1968 R. E. BUSCH3,399,330

ACCUMULATOR SELECTING AND TENS TRANSFER MECHANISM FOR CALCULATINGMACHINE Original Filed Aug. 11, 1964 6 Sheets-Sheet 4 v INVENTOR.RICHARD E. BUSCH ATTORNEY Sept. 3, 1968 R. E. BUSCH 3,399,830

ACCUMULATOR SELECTING AND TENS TRANSFER MECHANISM FOR CALCULATINGMACHINE Original Filed Aug. 11, 1964 6 Sheets-Sheet 5 III INVENTQR.RICHARD E. BUSCH ATTORNEY Sept. 3, 1968 R. E. BUSCH 3,399,830

ACCUMULATOR SELECTING AND TENS TRANSFER MECHANISM FOR CALCULATINGMACHINE Original Filed Aug. 11, 1964 6 Sheets-Sheet 6 INVENTOR. RICHARDE. BUSCH A TTOR NE Y United States Patent Ofice Patented Sept. 3, 19683,399,830 ACCUMULATOR SELECTING AND TENS TRANSFER MECHANISM FOR CALCU- 1LATING MACHINE Richard E. Busch, La Puente, Calif., assignor to SperryRand Corporation, New York, N.Y., a corporation of Delaware Originalapplication Aug. 11, 1964, Ser. No. 388,900, now Patent No. 3,348,768,datedv Oct. 24, 1967. Divided and this application Oct. 22, 1965, Ser.No. 515,278

13 Claims. (Cl. 235133) ABSTRACT OF THE DISCLOSURE A tens transfermechanism for use in a calculating machine of the type utilizing aplurality of secondary differential actuators for digitizing selectedones of a plurality of secondary accumulators wherein each secondarydifferential has slidably disposed thereon at least one transfer rack.Each secondary accumulator includes a tens transfer tooth which uponinteracting with the transfer rack of its associated secondarydifferential actuator activates a mechanism to advance the nextsucceeding secondary accumulator by one increment. This mechanismincludes a spring connected between each transfer rack and itsassociated secondary differential actuator. A latch holds each transferrack fixed relative to its associated secondary differential actuatoruntil released by the return stroke of its secondary differentialactuator after the tens tooth on a secondary accumulator has interactedwith the transfer rack of the preceding secondary differential actuator.

The present invention relates in general to calculating machines of thecash registering type and more particularly to a multiple accumulatorselecting and tens transfer mechanism for such machines. Thisapplication is a division of my co-pending patent application Ser. No.388,- 900, filed Aug. 11, 1964.

The invention is basically designed for a cash register in which, inaddition to the main itemizing accumulator, there is provided aplurality of secondary department accumulators. The invention comprisesa mechanism by which a particular secondary accumulator may be selectedfor digitation and directly associated with the secondary accumulatorsfor effecting a tens transfer.

It is an object of the present invention to provide a calculatingmachinehaving differential actuators for multiple departmentaccumulators coordinated to the main itemizing accumulator racks in sucha way that no transverse spring load is exerted on the main racks inhome position and no extra motion of the main racks is needed fortransfer of said accumulators.

It is another object of the instant invention to provide a calculatingmachine provided with a plurality of spring transfer, lateral shift typedepartment accumulators in addition to the normal working accumulatorand a tens transfer mechanism and accumulator selecting mechanismtherefor.

It is a further object of the instant invention to provide a calculatingmachine of the type described in which positive false transferprevention of the transfer. racks is provided.

. It is still another object of the instant invention to provide acalculating machine of the type described in which one departmentaccumulator in each station may be digitized simultaneously in additionto the working accumulator.

It is a further object of the instant invention to provide a calculatingmachine of the type described having multiple secondary accumulatorswhich are actuated in 'a very simple manner requiring only few parts.

It is a still further object of the instant invention to provide acalculating machine of the type described having multiple secondaryaccumulators anda mechanism which provides for accumulator selectionfrom the keyboard of the machine.

It is another object of the instant invention to provide a calculatingmachine of the type described having mul tiple secondary accumulatorsand a tens transfer mechanism for the secondary accumulators whichprovides an overall mechanical advantage through the transfer linkagesuch that the transfer spring in one column can easily unlatch againstpressure of a similar spring in the column of the next higher order.

It is still another object of the instant invention to provide acalculating machine of the type described having multiple secondaryaccumulators and a tens transfer mechanism for the secondaryaccumulators in which transfer carry is automatically initiated as thetransfer racks pass through the last increment of motion on the returnstroke.

These and other objects, features and advantages of the presentinvention will become more obvious from the following description whentaken in connection with the accompanying drawings, which show forpurposes of illustration only, one embodiment in accordance with thepresent invention and wherein:

FIGURE 1 is a top plan view of a calculating machine of the type intowhich the instant invention may be incorporated;

FIGURE 2 is a longitudinal section of the machine illustrating theracks, keyboard and associated elements;

FIGURE 3 is a plan view of the tens transfer mechanism of the instantinvention;

FIGURE 3A is a view of the tens transfer mechanism taken along line3A,3A of FIGURE 4;

FIGURE 4 is a section view taken along line 44 of FIGURE 3 illustratingsuccessive transfer racksand the tens transfer mechanism of theinvention;

FIGURE 5 is a detail view of an accumulator element in accordance withthe invention;

FIGURE 6 is a detail view of the lever mechanism which initiates tenstransfer in the device of FIGURE 3;

FIGURE 7 is an illustration of the secondary accumulator positioningmechanism;

FIGURE 8 is a plan view of the accumulator selection mechanism of theinstant invention;

FIGURE 9 is a bottom view of the mechanism of FIG- URE 8 illustratingthe manner in which the accumulator shaft is arrested in properposition; and

FIGURE 10 is a detail view of a portion of the mechanism of FIGURE 8illustrating the manner in which the selector mechanism is locked duringthe second half of the machine cycle.

The present invention is particularly designed for use with theaccumulator control and positioning mechanism described in US. PatentNo. 3,348,769 issued Oct. 24, 1967, in the name of Richard E. Busch,however, it is to be understood that the present invention may beutilized with other arrangements than disclosed in said copendingapplication and may be utilized to equal advantage in other forms ofcalculating machines.

The machine comprises in general, as seen in FIGURE 1, a main cover 1which includes a keyboard 2 providing the various control keys whicheffect operation of the machine through desired selected functions. Acash drawer 3 is provided at the lower portion of the machine, and abovethe keyboard 2 there is provided a dial system 4 visible through window5, which dial system indicates the amounts involved in each transactionof the machine along with other pertinent information.

The keyboard 2 contains a first column of keys 9 .on the left sidethereof which provide for general identification of the operator. Noaccumulator is included in this column, and therefore the reciprocatingrack is utilized only to set the dial system 4. The next column is emptyexcept for an amount release key 8, which controls the depressed amountkeys so as to provide selective release thereof without initiating amachine cycle.

Amounts are entered into the machine by way of amount keys 11 which areprovided in six columns. Two columns are provided adjacent the amountkeys 11 for a plurality of department keys 12, which serve to select thedepartment accumulator which are digitized during the cycle and also thetype of digitation which is to occur as well as other functions whichwill be described below.

The right hand column on the keyboard 2 provides the function keys 13,which, for example, may include a change balance due and no sale key, atotal key, an add or grocery key, etc. The computing mechanism of themachine is motor driven and includes a cyclically operable nrain camshaft 31 (FIGURE 2), driven by a cyclic clutch (not shown) under controlof the department keys 12 and the function keys 13, depression of any ofwhich will initiate a cycle of operation of the machine.

FIGURE 2 shows the general construction of the keyboard which issubstantially identical to the basic keyboard mechanism in thewell-known Clary adding machine. Each of the amount keys 11 of thekeyboard includes a key stem 14 guided for vertical movement in alignedslots formed in keyboard frame plates 20 and 21. The lower edges of thekey stems cooperate with spaced shoulders 16 formed on aligned racks tolimit the forward advancement of each rack to a number of incrementscorresponding to the numerical value of the key depressed.

Means (not shown) associated with the main cam line are provided foryieldably advancing the racks 15 during the first half of a machinecycle and for returning them to their home positions after a printingoperation and during the latter half of the machine cycle. The racks areprovided with slots 64 and 65 which are slidably guided over supportshafts 66 and 67, respectively. The shaft 67 is slidably mounted insuitable guideslots (not shown) in the frame of the machine.

In order to yieldably advance the various racks, each rack has opposednotches 63 located at the closed end of its slot 65, the notches beingnormally engaged by rollers 62 carried by pawls 131 pivotally mounted onthe shaft 67. A tension spring 132 extends between each pair of pawlswhereby to urge the latter outwardly and thus hold the rollers 62 indriving engagement with the notches 63, thereby yieldably advancing anyracks which are otherwise free to do so. When any one of the racks 15 isarrested by a depressed amount key stem or by a zero block (not shown),the rollers 62 will ride out of the notch 63 of the blocked rack andalong the edge of the slot 65.

The primary accumulator 7 is basically disclosed in the Drake Patent No.2,472,696. Reference may be made to said patent for a completedisclosure of details of the accumulator not specifically shown herein.In general, the primary accumulator 7 comprises a plurality ofaccumulator gears 173 independently mounted on an accumulator shaft 103.For the purpose of raising the accumulator 7 from its neutral position,shown in FIGURE 2, into its upper position when the accumulator gears173 mesh with the upper rack gear sections 93 of the associated racks orlowering the unit wherein the gears 173 mesh with the rack gear sections102, the present invention provides an accumulator positioning mechanismwhich will be described in greater detail in conjunction with FIGURE 5.

In addition to the normal working accumulator, the machine in accordancewith the invention is also provided with a plurality of additionaldepartment accumulators which are arranged in one or more stations (FIG-URE 3) depending upon the number of totals which is desired. Eachsecondary accumulatorstation is provided with four accumulators. Forselection of a particular accumulator, there are provided the columns ofdepartment keys 12 in the keyboard (FIGURE 1), there being one column ofkeys 12 for each station of accumulators. Each column contains fourdepartment keys representative of the four accumulator positions at aparticular station. The particular manner in which these keys properlyselect one of the four accumulators provided in each station forms apart of the invention to be described in connection with FIGURES 6through 10.

Looking first to the manner in which the lower accumulators aredigitized in coordination with the main accumulator rack, FIGURE 3 showsthe main accumulator rack 15 in an amount column which on its forwardstroke to the left digitizes a working accumulator 7 (FIGURE 2) andalso, through an idler gear 72, drives a lower main rack 73 on itsinitial stroke to the right. The rack 73 has slidably mounted on theother side thereof, as seen in FIGURE 3, transfer racks 76 and 56 whichserve to digitize their respective lower accumulators 74 and 75. Theracks 76 and 56 are supported by pins 58 and 57 carried by slots 54 and55, respectively, in rack 73. Springs 51 and 91 mounted betweentherespective racks 76 and 56 and the rack 73 bias the transfer racksinto a reference position. During the forward stroke of the upper rack15 and corresponding initial stroke of the lower rack 73, the loweraccumulators 74 and are retained in the neutral position in engagementwith their respective detent bars 77 and 78. In performing an addoperation during the latter half cycle of machine operation and beforethe racks 15 begin their homeward stroke, one of the accumulator shafts79 or 80 associated respectively with a lower accumulator 74 or 75,depending upon station selection from the keyboard, will raise theassociated accumulator gear from itn detent bar and into mesh with thetransfer rack 76.

As the rack 15 begins its homeward stroke, the lower transfer rack 76will digitize its respective accumulator gear. It should be noted thatthe lower accumulators are digitized on the back stroke of the uppermain rack and therefore the additional accumulator loads do not hinderthe digitation of the upper rack. In addition no transfer spring load isapplied to the main rack in the home position and no extra motion of themain racks is needed for tens transfer.

During the digitizing stroke of the rack 76, should a tens transferbecome necessary, a double width tooth 69 is provided on the accumulatorgears 74 and 75 which are alike, as illustrated in FIGURE 5. A pivot arm81 is rockably mounted upon shaft 82 in proximity to each of theaccumulator gears and contains a camming tooth 83 (FIGURE 6) which ispositioned in the .same plane as the double width tooth 69 of theaccumulator gear and is biased by spring 84 in contact with theaccumulator gear so that during counterclockwise rotation thereof whenthe double width tooth strikes the camming tooth 83 on pivot arm 81, thepivot arm will rock counterclockwise about the shaft 82. As seen inFIGURES 3, 4, and 6, the pivot arm 81 normally latches a transfer latch61 of the next highest order, which is pivotally mounted upon shaft 85.When the transfer latch 61 is released by pivot arm 81, it will pivot ina counterclockwise direction about the shaft 85 in response to the biasprovided by spring 86, which extends between transfer latch 61 and aframing pin 87. The transfer latch 61 will rotate in a counterclockwisedirection to a position determined by the stop 68, and this Will beeffective to produce a tens transfer in the rack 76' associated with thelower rack 73' of the next higher order, as will now be described.

Looking to both FIGURES 3 and 4, a lever 88 is loosely pinned to thelower rack 73 at 89 and is biased in a counterclockwise direction byspring so that a latching lip 96 extending through an aperture 59 inrack 73 forms a reference stop for the transfer rack 76. In a similar 15 manner the lever 48 loosely pinned to the lower rack 56 at 49 isbiased in a counterclockwise direction by the spring so that a latchinglip 50 extending through aperture 47 in rack 73 forms a reference stopfor the transfer rack 56.

When the pivot arm 81 is indexed by the tooth 69 on accumulator gear 74and the transfer latch 61 is released, the latch 61 will move to aposition against stop 68 such that a projection or abutment, on thetransfer latch 61 will move to a point where it will contact upper arm92 of lever 88 on return movement of the rack 73'.

The clockwise rotation of lever 88 against the bias of spring 95' liftsthe latching lip 96' on lever 88' from the path of the shoulder 97' oftransfer rack 76'. allowing the transfer rack 76' to move under theaction of spring 91' one increment to the left determined by stop 98mounted on the transfer rack 76. Movement of the transfer rack 76' oneincrement to the left advances the accumulator gear in engagement withthe transfer rack by one tooth.

Relatchin-g of the transfer mechanism occurs during the first part ofthe following cycle during the time used to mesh the workingaccumulator. It is effected by movement of a rack support shaft 100connected to the working accumulator positioning mechanism (FIGURE 7).Movement of the rack support shaft 100 to the right, as seen in FIGURE3, will drive a bar 101 mounted on the rack 76 to the right so that thelever 88 under the influence of its spring 95 will snap down over theshoulder 97 relatchi-ng the rack 76. At the same time, the shaft 85 willrotate clockwise as the lever 88 contacts the projection 90 of thetransfer latch or bail 61 so its operating arm will be rotated in aclockwise direction downwardly to be relatched by the pivot arm 81.

It should be apparent from the above description that the transfermechanism associated with the transfer rack 76 has the same parts(similarly numbered but primed) and operates identically butindependently from rack 76 to control the four accumulators 75associated therewith.

It is also pointed out that the transfer racks and mechanisms associatedwith each of the accumulators on the shafts 79 and 80 are interlinked bythe transfer latches, such as latch 61, so'that tens transfer isaccomplished without placing an additional load on the main accumulatorrack 15.

During a sub-total or a total operation, the shaft 82 which carriespivot arm 81 will rotate clockwise bringing the edge of its slot next tothe key of the pivot arm 81 preventing said arm from rotating, therebyacting as a zero stop during these aforementioned operations duringwhich tens transfer is not desired. It is pointed out at this timethatclockwise rotation of the lower accumulators during the first portion ofthe cycle produces a total operation whereas counterclockwise rotationof the accumulators during the return portion of the cycle produces anadd operation. The lower accumulators will produce a total, a subtotalor an add operation, but do not produce a subtraction operation.

The mechanism for positioning the lower accumulators 74 and 75 isillustrated in FIGURE 7. Cams 149 and 151 operate through selector locks(not shown) to condition the machine fora read or reset operation. Thecam 149, representing a read operation, is rotated in a counterclockwisedirection by means of a pin 152 connected to the lock assembly. A camsurface on the cam 149 will rotate a cam follower 153 clockwise aboutits pivot shaft 154. The follower 153 has pinned thereto a link 155connected to a bell crank operable to cause shifting of a bailassociated with the keyboard control slides as disclosed inaforenoted'US. Patent No. 3,348,769. The bail in turn will moveinterlock slides in the keyboard into a position where none of the keysin the amount section can be depressed, while in the department section,depression of department keys is permitted if neither the subtotal ortotal keys in the function section have been depressed. In the functionsection, a slide will be moved so that only the subtotal or total keycan be depressed, and this will be possible only if none of the keys inthe department section have been depressed.

The follower 153 has connected thereto a second link 156 which, when thefollower is rotated, rides to the left over a guide pin 157. A spring158 is connected between the link 156 and a pin 160 on a sword fish 159.When the link 156 is moved to the left through rotation of the camfollower 153, the spring 158 will rock the sword fish 159 to the leftuntil it is in alignment beneath a pin 161 mounted on a rotatable disk163. g

It should be noted that the machine requires two cycles to reset or reada department total. The first cycle is for positioning the desiredaccumulator beneath the racks and the second cycle is for the actualread of reset operation.

The extreme end of the sword fish 159 opposite the pin 161 is connectedat 200 to a pivot arm 211 rotatable about stationary shaft 140. The ivotarm 211 is rocked through link 212 by the main cam line 213 via a camfollower 181.

The cam 149 having been set, counterclockwise rocking of the pivot arm211 by the main carn'line 213 actuates the sword fish 159 during returnso as to effect clockwise rotation of the rotatable disk 163 throughcontact with the pin 161. A link 162 pinned to the disk 163 at 180, willthus rock a latch arm 182 about pivot pin 183 into the path of a latchpin mounted on an accumulator engaging cam 178.

A selector link 179, connected at one end to the cam follower 181, has alatching surface 184 which lies in the same plane as a pin 177 which isalso mounted on the accumulator engaging cam 178, and is rotatable withcam 178 about pivot shaft 185. When main cam line 213 rocks the camfollower 181, the surface 184 will strike the pin 177 rocking the cam178 clockwise thereby rotating bell crank 187 about pivot axis 186 in acounterclockwise direction to mesh the accumulator 74 with the racks andat the same time latch the pin 170 on a surface 171 of the latch arm 182which will hold the accumulator in mesh during the last half of thefirst cycle and the first half of the second cycle.

The latch arm 182 will, in the first half of the second cycle, bereleased by the machine mechanism so that later in the cycle when theselector link 179 is rocked back to its home position, the engaging cam178 will be allowed to rotate back to its rest position, de-meshing theaccumulator from the racks.

The cam 151, which conditions the machine for a reset operation via aselector lock (not shown), is rotated in a counterclockwise directionthrough a pin 165 mounted on the selector lock actuating mechanism. Acam surface 166 of the cam 151 will rotate the cam follower 153 toperform the same functions described above in connection with the cam149 with the exception that a selector link 1.75 connected to a camfollower 191, like 181, which engages a separate cam on the main camline 213 will be moved into the plane of the pin 177 so that theaccumulator 74 will be de-meshed from the racks a half cycle earlier forthe reset operation than for the read operation.

The means for changing the positions of the selector links comprises acam follower 168 which is urged against the camming surface 167 of cam151 by a spring 187 connected to frame pin 188. A link 169, connectedbetween the follower 1-68 and a pivot arm 174, will pivot the arm 174about pivot shaft 189 in a counterclockwise direction so that the pin197, which pases through slots 190 and 191 in the end of the link 175and 179, respectively, will lift the links upward, placing the latchingsurface 176 of the link 175 in the same plane as the pin 177. When thecam follower 191 like 181 is rocked by the main cam 213 the link 175will be actuated so that the latching surface 176 will strike the pin177 rotating the accumulator engaging the cam 178 in'a clockwisedirection and the bell crank 187 in a counterclockwise direction therebyengaging the accumulator with the rack, however, the accumulator will bede-meshed from the racks a half cycle earlier because the link 175 iscontrolled by a different cam on the line 213.

A second pivot arm 214 is also mounted on the bell crank shaft 140 andis connected at one end to the rockable disk 163 through a link 215. Theotherend of the pivot arm 214 carries a stud 216 which rides in a slot217 of a link 218. The link 218 is connected at its opposite end to azero bail in the keyboard control slide section (not shown). The controlof the zero bail during a read and reset operation comes about becausethe department accumulators are engaged later in the cycle while theracks will tend to move early in the cycle with the itemizingaccumulator 7 in mesh. In a normal cycle the zero stops are releasedthrough a link in the main accumulator section (not shown) but during aread or reset cycle, the link 218 will not allow them to release untilthe department accumulators 74 and 75 are also meshed.

In order to acquire as many accumulators as possible, there are providedfour accumulators at each station, they all being mounted on the shaft'79 or 80 or additional shafts if more than two stations are provided.Each of the accumulator shafts is slidably mounted in the machine sideframes in any known manner. As previously stated, selection of aparticular accumulator is accomplished by means of keys provided on thekeyboard of the machine, there being one column of keys for each stationof accumulators. Each column contains four keys representative of thefour accumulator positions at that particular station.

Provided for each column of department selection keys is a main rack147, an idler gear 148 and a lower accumulator selection rack 104, whichis somewhat similar to rack 73 in FIGURE 3, except that, instead ofcarrying slidable transfer racks 76, these lower racks carry step plates105 having four steps (FIGURE 9) representative of the four positions ofthe accumulator shafts 79 and 80 which will place each of the fouraccumulators at each station in an engaging position with the lowertransfer rack 76.

At the beginning of a cycle, rack 147 through idler gear 148 will drivethe rack 104 to a position indicated by a depressed selection key 12 inthe keyboard, thereby placing a step on the rack 147, representative ofthe depressed selection key, in an appropriate position. At the sametime, an arm 110 is rotated counterclockwise on shaft 111 by the upperrack 147. Following the arresting of the racks 147 and 104, the arm 110will strike a pin 112 carried on a bell crank 113, which is pivoted at114. As the bell crank 113 is rocked clockwise about its pivot 114against the bias of spring 115, connected to frame pin 116, it willthrough a spring 117 connected to its free end pull a link 118 to theleft. Also connected to the bell crank 113 at its free end is a secondlink 120 and spring 119, the link 118 serving to actuate the accumulatorpositioning mechanism to station 1 and the link 120 serving to actuatethe accumulator positioning mechanism for station 2. Since theaccumulator positioning mechanism for the stations 1 and 2 are identicaland are actuated in an identical manner by the links 118 and 120, onlyone combination will be described in detail, it being understood thatthis description applies also to the structure and operation of thepositioning mechanism for station 2.

The link 118 is pinned to the crank arm 121 of a bail 122 and serves torotate the bail in a clockwise direction. An arm 123 of the bail willthrough a U-shaped positioning bar 124 which is securely mounted in agroove on the accumulator shaft 79, shift the accumulator shaft until anedge 125 of the positioning bar 124 strikes a respective step 106through 109 of the step. plate 105, thereby positioning the respectiveaccumulator gear beneath a respective transfer rack. The particularposition of the step plate 105 which effects proper registration of theedge 125 with the correct step on the plate has already been determinedby the proper positioning of the lower rack 104 through coordinatedmovement of the upper rack 102 to the position determined by theselection key 12 which has been depressed.

During the latter half of the machine cycle, the accumulator shaft 79will be raised to mesh the respective set of accumulator gears 74 withthe transfer rack 76. At the same time a tail 126 of the positioning bar124 will enter a respective detent in the accumulator gear detent bar 77(FIGURE 10) so that as the racks return home thereby rotating the armclockwise, the tail 126 positioned in the detent 127 will prevent theaccumulator shaft 79 from moving to its home position. However, when theaccumulator shaft is lowered by the accumulator positioning mechanismnear the end of the cycle, the tail will be lowered out of the detent127 allowing the accumulator to return home under the action of thespring 117.

As is apparent from the above description, and while the descriptionrelated to a provision of only two stations of accumulator gears, itshould now be obvious that several stations each having four accumulatorgears may be provided by merely increasing the length of the lower rack.

The tens transfer mechanism and the accumulator selection device of theinstant invention provide many unique advantages, the majority of whichresult from the rather simple manner in which the ends of the inventionare accomplished. The tens transfer mechanism provides for simple,lateral shift of the lower racks especially due to the fact that thelateral shift occurs with the accumulator gears out of mesh with theracks and the transfer mechanism such that only a smooth liner barengages the gears in this position. No accumulator gear detents areprovided to add loads to the rack drive. This is all accomplished with aminimum number of parts providing for dependability and low cost ofmanufacture. In addition, in overall mechanical advantages provided inthe transfer linkage such that the transfer spring in one column caneasily unlatch against pressure of a similar spring in the column ofnext higher order. The transfer carry is automatically initiated as theracks pass through the last increment of motion on the return stroke andthe transfer mechanism is restored during the time used to mesh theworking accumulator, except on totals and sub-totals when the transferrestore function is disabled and one of the multiple accumulators isengaged.

I claim:

1. In a calculating machine of the cash registering type having aplurality of primary differential actuators, a plurality of accumulatorelements respectively driven by said primary differential actuators anextent representative of a numerical value, and means for driving saiddiflerential actuators through incremental amounts relating to saidnumerical values, the improvement consisting of a plurality of secondarydifferential actuators and at least one accumulator selection rackoperably associated with said primary differential actuators forcoordinate movement therewith to a representative position, eachsecondary differential actuator having associated therewith a pluralityof secondary accumulator elements, lower accumulator selecting meansoperatively associated with said accumulator selection rack forcoordinate operation therewith including means for positioning one ormore secondary accumulator elements in operative relationship with eachrespective secondary differential actuator in response to the extent ofmovement of said selection rack to a representative position, eachsecondary differential actuator having associated therewith a tenstransfer mechanism including a transfer rack means disposed on andmovable relative to its associated secondary difi'erential actuator andoperative to index each respective secondary accumulator element anincremental amount in response to control from an adjacent secondarydifferential actuator, said secondary accumulator elements being mountedon a reciprocable shaft actuated by said means for positioning, and stepmeans controlled by said accumulator selection rack for arresting saidmeans for positioning in a position determined 'by the representativeposition of said selection rack, each secondary differential actuatorhaving a latch means for retaining said transfer rack means in areference position, and means for releasing said latch means on onesecondary actuator in response to indicia on the secondary accumulatorelement associated with the secondary actuator of the preceding orderthereby effecting a tens transfer.

' 2. In a calculating machine of the cash registering type having aplurality of primary differential actuators, a plurality of accumulatorelements respectively driven by said primary differential actuators anextent representative of a numerical value, and means for driving saiddifferential actuators through incremental amounts relating to saidnumerical values, the improvement consisting of a plurality of secondarydifferential actuators and at least one accumulator selection rackoperably associated with said primary differential actuators forcoordinate movement therewith to a representative position, eachsecondary differential actuator having associated therewith a pluralityof secondary accumulator elements mounted on a reciprocable shaft, loweraccumulator selecting means operatively associated with said accumulatorselection rack for coordinate operation therewith including means forpositioning one or more secondary accumulator elements in operativerelationship with each respective secondary differential actuator inresponse to the extent of movement of said selection rack to arepresentative position, each secondary differential actuator havingassociated therewith a tens transfer mechanism including a transfer rackmean-s disposed on and moveable relative to its associated secondarydifferental actuator and operative to index each respective secondaryaccumulator element an incremental amount in response to control from anadjacent secondary differential actuator, each secondary differentialactuator having a latch means for retaining said transfer rack means ina reference position, and means for releasing said latch means on onesecondary actuator in response to indicia on the secondary accumulatorelement associated with the secondary actuator of the preceding orderthereby effecting a tens transfer.

3. In a calculating machine of the cash registering type having aplurality of primary differential actuators, a plurality of accumulatorelements respectively driven by said primary differential actuators anextent representative of a numerical value, and means for driving saiddifferential actuators through incremental amounts relating to saidnumerical values, the improvement consisting of a plurality of secondarydifferential actuators operably associated with respective ones of saidprimary differential actuators for coordinate movement therewith, atleast one secondary accumulator element associated with each secondarydifferential actuator, transfer rack means slidably disposed on eachsecondary actuator for engaging with said respective secondaryaccumulator element during movement of said secondary actuator, transfertooth means associated with each secondary accumulator, and meansresponsive to said transfer tooth means for indexing the transfer rackmeans of the next highest order one increment after said secondarydifferential actuator has come to rest so as to effect a tens transferindependent of said primary actuators.

4. In a calculating machine of the cash registering type having aplurality of primary differential actuators, a plurality of accumulatorelements respectively driven by said primary differential actuators anextent representative of a numerical value, and means for driving saiddifferential actuators through incremental amounts relating to saidnumerical values, the improvement consisting of a plurality of secondarydifferential actuators operably associated with respective ones of saidprimary differential actuators for coordinate movement therewith, atleast one secondary accumulator element associated with each secondarydifferential actuator, at least one transfer rack means slida blydisposed on each secondary actuator for engaging with said respectivesecondary accumulator element during movement of said secondaryactuator, transfer tooth means associated with each secondaryaccumulator, and means responsive to said transfer tooth means forindexing the transfer rack means of the next highest order one incrementafter said secondary differential actuator has come to rest includinglatch means associated with each secondary actuator for releasablymaintaining said transfer rack means in a reference position and linkagemeans for releasing said latch means in response to said transfer toothmeans so as to effect a tens transfer.

5. In a calculating machine of the cash registering type having aplurality of primary differential actuators, a plurality of accumulatorelements respectively driven by said primary differential actuators anextent representative of a numerical value, and means for driving saiddifferential actuators through incremental amounts relating to saidnumerical values, the improvement consisting of a plurality of secondarydifferential actuators operably associated with respective ones of saidprimary differential actuators for coordinate movement therewith, aplurality of secondary accumulator elements associated with eachsecondary differential actuator, transfer rack means slidably disposedon each secondary actuator for engaging with said respective secondaryaccumulator elements during movement of said secondary actuator,transfer tooth means associated with each secondary accumu-.

lator, means responsive to said transfer tooth means for indexing thetransfer rack means of the next highest order one incrementrepresentative of -a tens transfer, and means for returning saidtransfer rack means from the indexed position to a reference position inpreparation for the next cycle of operation of the machine.

6. Ina calculating machine of the cash registering type having aplurality of primary differential actuators, a plurality of accumulatorelements respectively driven by said primary differential actuators anextent representative of a numerical value, and means for driving saiddifferential actuators through incremental amounts relating to saidnumerical values, the improvement consisting of a plurality of secondarydifferential actuators operably associated With respective ones of saidprimary differential actuators for coordinate movement therewith, aplurality of secondary accumulator elements associated with eachsecondary differential actuator, at least two transfer rack meansslidably disposed on each secondary actuator for engaging withrespective pre-selected ones of said secondary accumulator elementsduring movement of said secondary actuator, transfer tooth meansassociated with each secondary accumulator, and means responsive to saidtransfer tooth means for indexing the transfer rack means of the nexthighest order one increment.

7. In a calculating machine of the cash registering type having aplurality of primary differential actuators, a plurality of accumulatorelements respectively driven by said primary differential actuators anextent representative of a numerical value, and means for driving saiddifferential actuators through incremental amounts relating to saidnumerical values, the improvement essentially consisting of a pluralityof secondary differential actuators operably associated with respectiveones of said primary differential actuators for coordinate movementtherewith, a plurality of secondary accumulator elefnents associatedwith each secondary differential actuator, means for positioning aselective one of said accumulator elements in operative association witha respective secondary differential actuator, transfer rack meansslid-ably mounted on each secondary differential actuator for engagingwith a respective one of said secondary accumulator elements duringmovement of said secondary actuator, latch means mounted on eachsecondary actuator for retaining said transfer rack means in a referenceposition, spring means for biasing said transfer rack means against saidlatch means on each secondary actuator and capable of indexing saidtransfer rack means one increment in an additive direction, transfertooth means associated with each secondary accumulator for effecting atens transfer, and means responsive tdsaidtransfer tooth-means on onesecondary accumulator element for actuating the latch means to releasethe transfer rack means associated with the secondary actuator of thenext highest order so as to index said transfer rack means and itsassociated accumulator by one increment thereby effecting a tenstransfer. i

8. In a calculating machine of the cash regisfering type having aplurality of primary differential actuators, a plurality of accumulatorelements respectively driven by said primary differential actuators anextent representative of a numerical value, and means for driving saiddifferential actuators through incremental amounts relating to saidnumerical values, the improvement essentially consisting of a pluralityof secondary differential actuators operably associated with respectiveones of said primary differential actuators for coordinate movementtherewith, a plurality of secondary accumulator elements associated witheach secondary differential actuator, means for positioning a selectiveone of said accumulator elements in operative association with arespective secondary differential actuator, transfer rack means slidablymounted on each secondary differential actuator for engaging wi.h arespective one of said secondary accumulator elements during movement ofsaid secondary actuator, latch means mounted on each secondary actuatorfor retaining said transfer rack means in a reference position, springmeans for biasing said transfer rack means against said latch means andcapable of indexing said transfer rack means one increment in anadditive direction, transfer tooth means associated with each secondaryaccumulator for effecting a tens transfer, means responsive to saidtrasnfer tooth means on one secondary accumulator element for actuatingthe latch means to release the ransfer rack means associated with thesecondary actuator of the next highest order so as to index saidtransfer rack means and its associated accumulator by one incrementthereby effecting a tens transfer, and means for returning said transferrack means from the indexed position to a reference position inpreparation for the next cycle of operation of the machine.

9. In a calculating machine of the cash registering type having aplurality of primary differential actuators, a plurality of accumulatorelements respectively driven by said primary differential actuators anextent representative of a numerical value, and means for driving saiddifferential actuators through incremental amounts relating to saidnumerical values, the improvement essentially consisting of a pluralityof secondary differential actuators operably associated with respectiveones of said primary differential actuators for coordinate movementtherewith, a plurality of secondary accumulator elements associated witheach secondary differential actuator, means for positioning a selectiveone of said accumulator elements in operative association with arespective secondary differential actuator, plural transfer rack meansslidably mounted on each secondary differential actuator for engagingwith a respective one of said secondary accumulator elements duringmovement of said secondary actuator, latch means mounted on eachsecondary actuator for retaining said transfer rack means in a referenceposition, spring means for biasing said transfer rack means against saidlatch means on each secondary actuator and capable of indexing saidtransfer rack means one increment in an additive direction, transfertooth means associated with each secondary accumulator for effecting atens transfer, means responsive to said transfer tooth means on onesecondary accumulator element for acuating the latch means to releasethe transfer rack means associated with the secondary actuator of thenext highest order so asto index said transfer rack means and itsassociated accumulator by one increment thereby effecting a tenstransfer, andmeansfor locking said means responsive to said transfertooth means during total and sub-total-operations of the machine so asto-prevent a tens transfer during these functions. i

10. In a calculating machine of the cash registering type having aplurality of primary differential actuators, a plurality of accumulatorelements respectively driven by said primary differential actuators anextent representative of a numerical value, and means for driving saiddifferential actuators through incremental amounts relating to saidnumerical values, the improvement essentially consisting of a pluralityof secondary differential actuators operably associated with respectiveones of said primary differential actuators for coordinate movementtherewith, a plurality of secondary accumulator elements associated witheach secondary differential actuator, means for positioning a selectiveone of said accumulator elements in operative association with arespective secondary differential actuator, plural transfer rack meansslidably mounted on each secondary differential actuator for engagingwith respective pre-selected ones of said secondary accumulator elementsduring movement of said secondary differential actuator, latch meansmounted on each secondary differential actuator for retaining saidtransfer rack means in a reference position, spring means for biasingsaid transfer rack means against said latch means on each secondaryactuator and capable of indexing said transfer rack means one incrementin an additive direction, transfer tooth means associated with eachsecondary accumulator for effecting a tens transfer, abutment meansselectively settable into operative association with said latch meansfor releasing said latch means upon return movement of said secondarydifferential actuator, and means responsive to said transfer tooth meanson one secondary accumulator element for setting said abutment meansassociated with the secondary differential actuator of the next highestorder to its operative position thereby effecting a tens transfer on thereturn movement of said differential actuators.

11. In a calculating machine of the cash registering type having aplurality of primary differential actuators, a plurality of accumulatorelements respectively driven by said primary differential actuators anextent representative of a numerical value, and means for driving saiddifferential actuators through incremental amounts relating to saidnumerical values, the improvement comprising a plurality of secondaryactuators arranged in side-by-side relationship operably associated withsaid primary differential actuators for coordinate movement therewith,each secondary actuator having associated therewith a plurality ofsecondary accumulator elements, selecting means operatively associatedwith said primary differential actuators for coordinateoperationtherewith for positioning one or more secondary accumulator elementsinto operative relationship with its respective secondary differentialactuator, at least one transfer rack slidably disposed on each secondaryactuator, spring means connected between each secondary actuator and itsrespective transfer rack, latch means holding each transfer rack fixedrelative to its respective secondary actuator and spring means, meansconnected between each adjacent pair of secondary actuatorsfor'releasing the latch means associated with one secondary actuatorafter the transfer rack associated with the preceding secondary actuatorhas'digitized its associated accumulator element a preselected number ofincrements, whereby the accumulator element""associated with said onesecondary actuator is digitized by the transfer rack associated withsaid one secondary actuator.

12. In an apparatus according to claim 11 wherein said one secondaryactuator includes a stop means to limit 13 movement of the transfer rackassociated with said one secondary actuator so that the accumulatorelement associated with said one secondary actuator is digitized only apredetermined amount.

13. In an apparatus according to claim 12 further including transfertooth means disposed on each of said secondary accumulator elements,

each of said transfer racks including teeth for digitizing itsassociated secondary accumulator,

a member associated with each secondary actuator for causing the releaseof the latch means associated with said one of said secondary actuatorswhen said teeth of the transfer rack associated with Said precedingsecondary actuator meshes with said transfer tooth means.

References Cited UNITED STATES PATENTS Parsons, et a1. 235-60 Golemon235-6 Reeves 235-133 Pitman 235-137 Logie 235-137 Chall 235-134 Bullock235-60 STEPHEN J. TOMSKY, Primary Examiner.

